A vibration unit includes a light transmitting member including at least a portion of a detection region of an imaging element, and a vibration element including a vibrating body coupled to the light transmitting member. The light transmitting member includes a central region and a peripheral region located around the central region. The light transmitting member includes a hydrophilic film in the peripheral region thereof.
Legal claims defining the scope of protection, as filed with the USPTO.
2. The vibration unit according to claim 1, wherein, in the peripheral region of the light transmitting member, the hydrophilic film is in a region including the detection region.
3. The vibration unit according to claim 1, wherein the light transmitting member includes a water-repellent film in the central region thereof.
4. The vibration unit according to claim 3, wherein the water-repellent film is at a portion of the light transmitting member located at a vibration antinode.
5. The vibration unit according to claim 1, wherein the vibration element includes a piezoelectric vibrator disposed on the vibrating body.
6. The vibration unit according to claim 1, wherein the hydrophilic film is at a portion of the light transmitting member located at a vibration node.
7. The vibration unit according to claim 1, further comprising a controller electrically connected to the vibration element to control vibration of a combined unit including the light transmitting member and the vibrating body.
10. The optical detection device according to claim 9, wherein the optical detection element includes an imaging element, and the detection region is a field of view.
11. The optical detection device according to claim 9, wherein, in the peripheral region of the light transmitting member, the hydrophilic film is in a region including the detection region.
12. The optical detection device according to claim 9, wherein the light transmitting member includes a water-repellent film in the central region thereof.
13. The optical detection device according to claim 12, wherein the water-repellent film is at a portion of the light transmitting member located at a vibration antinode.
14. The optical detection device according to claim 9, wherein the vibration element includes a piezoelectric vibrator on the vibrating body.
15. The optical detection device according to claim 9, wherein the hydrophilic film is at a portion of the light transmitting member located at a vibration node.
16. The optical detection device according to claim 9, further comprising a controller electrically connected to the vibration element to control vibration of a combined unit including the light transmitting member and the vibrating body.
Cooperative Patent Classification codes for this invention. Click any code to explore related patents in that topic.
August 21, 2020
July 23, 2024
Browse 5M+ US patents with plain-English claim translations and AI-generated analysis.